
def get_jiecheng(number): #3
    result=number #3
    while number!=1:
        result=result*(number-1)
        number=number-1
    return result


def computer_circle_area(r):
    import math
    area=math.pi*r*r
    return area



def is_prime(number):
    number_isprime_sum=0
    for num in range(2,number):
        if number%num==0:
            number_isprime=1
        else:
            number_isprime=0
        number_isprime_sum=number_isprime+number_isprime_sum
    return number_isprime_sum

def number_is_prime(begin,end):
    prime_list = []
    for number in range(begin,end+1):
        if  is_prime(number)==0:
            prime_list.append(number)
    return prime_list


def num_square_sum(number):
    num_square_sum=int()
    for num in range(1,number+1):
        num_square=num*num
        num_square_sum=num_square_sum+num_square
    return num_square_sum

def list_sum(list):
    number_total=int()
    for number in list:
        number_total=number_total+number
    return number_total

def range_even(begin,end):
    number_even_list=[]
    for number in range(begin,end+1):
        if number%2==0:
            number_even_list.append(number)
    return number_even_list



list1=[3,5,7,9,11,13]
list2=[7,11]
def list_remove(list1,list2):
    for item in list2:
        list1.remove(item)
    return list1



